Added user state (nested menus) and sub-menu to control different potential problems and system status

BotService.cs

@@ -15,11 +15,8 @@ namespace ZaoBot
 	{
 		private JsonDocument config;
 		static ITelegramBotClient botClient;
-		HttpClient http = new HttpClient();
-
-		const string CMD_WEATHER = "Погода";
-		const string CMD_LEFT_GATE = "Открой левые ворота";
-		const string CMD_RIGHT_GATE = "Открой правые ворота";
+		Dictionary<long, IUserState> userStates = new Dictionary<long, IUserState>();
+		private OpenHab.OpenHabClient openhab;
 
 		bool shouldRestart = false;
 
@@ -33,6 +30,7 @@ namespace ZaoBot
 			var token = config.RootElement.GetProperty("token").GetString();
 			shouldRestart = false;
 			botClient = new TelegramBotClient(token);
+			openhab = new OpenHab.OpenHabClient(config.RootElement.GetProperty("openhab_url").GetString());
 			var me = botClient.GetMeAsync().Result;
 			Console.WriteLine($"Hello, World! I am user {me.Id} and my name is {me.FirstName}.");
 			botClient.OnMessage += OnBotMessage;
@@ -49,53 +47,27 @@ namespace ZaoBot
 			{
 				if (e.Message.Text != null)
 				{
-					if (!VerifyUser(e.Message.Chat.Id, e.Message.Chat.Username))
+					var id = e.Message.Chat.Id;
+					IUserState state = null;
+					if (userStates.ContainsKey(id))
+					{
+						state = userStates[id];
+					}
+					if (state == null)
+					{
+						state = new MainMenuUserState(botClient, config, openhab);
+					}
+					state = await state.ProcessMessage(state, e);
+					if (state == null)
 					{
-						Console.WriteLine($"Received message {e.Message.Text} from invalid user {e.Message.Chat.Username}");
 						await botClient.SendTextMessageAsync(
 							chatId: e.Message.Chat,
-							text: "Ваш ID " + e.Message.Chat.Id + " сообщите его администратору"
+							text: "Я запутался, давайте сначала"
 						);
-						return;
+						state = new MainMenuUserState(botClient, config, openhab);
+						state = await state.ProcessMessage(state, e);
 					}
-					Console.WriteLine($"Received a text message in chat {e.Message.Chat.Id}.");
-
-					var response = "";
-					if (e.Message.Text == CMD_LEFT_GATE)
-					{
-						response = await OpenLeftGate();
-					}
-					else if (e.Message.Text == CMD_RIGHT_GATE)
-					{
-						response = await OpenRightGate();
-					}
-					else if (e.Message.Text == CMD_WEATHER)
-					{
-						response = await ShowWeather();
-					}
-					else if (e.Message.Text == "")
-					{
-						response = "Превед!";
-					}
-					else response = "Я не понял :-(";
-
-					if (e.Message.Text != "") response += "\nЧто дальше?";
-					else response = "\nЧего изволите?";
-
-					var replyKeyboardMarkup = new ReplyKeyboardMarkup(
-						new KeyboardButton[][]
-						{
-						new KeyboardButton[] { CMD_WEATHER },
-						new KeyboardButton[] { CMD_LEFT_GATE, CMD_RIGHT_GATE },
-						},
-						resizeKeyboard: true
-					);
-
-					await botClient.SendTextMessageAsync(
-					  chatId: e.Message.Chat,
-					  text: response,
-					  replyMarkup: replyKeyboardMarkup
-					);
+					userStates[id] = state;
 				}
 			}
 			catch (Exception ex)
@@ -106,90 +78,5 @@ namespace ZaoBot
 				shouldRestart = true;
 			}
 		}
-
-		private async Task<string> ShowWeather()
-		{
-			try
-			{
-				string response = "";
-				foreach (var element in config.RootElement.GetProperty("items_weather").EnumerateObject())
-				{
-					var url = config.RootElement.GetProperty("openhab_url").GetString();
-					url += element.Name;
-					var result = await http.GetAsync(url);
-					var content = await result.Content.ReadAsStringAsync();
-					response += element.Value + ": " + ParseContent(content) + "\n";
-				}
-				return response;
-			}
-			catch (Exception e)
-			{
-				return "Fail: " + e.Message;
-			}
-		}
-
-		private string ParseContent(string content)
-		{
-			var doc = JsonDocument.Parse(content);
-			float value;
-			if (!float.TryParse(doc.RootElement.GetProperty("state").GetString(), out value))
-			{
-				return "null";
-			}
-			try
-			{
-				var stateDescription = doc.RootElement.GetProperty("stateDescription");
-				var pattern = stateDescription.GetProperty("pattern");
-				return printf.Printf.sprintf(pattern.GetString(), value);
-			}
-			catch (KeyNotFoundException)
-			{
-				return value.ToString();
-			}
-		}
-
-		private async Task<string> OpenRightGate()
-		{
-			var url = config.RootElement.GetProperty("openhab_url").GetString();
-			url += config.RootElement.GetProperty("item_right_gate").GetString();
-			return await Post(url, "ON");
-		}
-
-		private async Task<string> Post(string url, string v)
-		{
-			var content = new ByteArrayContent(Encoding.UTF8.GetBytes(v));
-			content.Headers.Add("Content-Type", "text/plain");
-			var result = await http.PostAsync(url, content);
-			if (result.IsSuccessStatusCode) return "OK";
-			else return "Fail. " + result.ReasonPhrase;
-
-		}
-
-		private async Task<string> OpenLeftGate()
-		{
-			var url = config.RootElement.GetProperty("openhab_url").GetString();
-			url += config.RootElement.GetProperty("item_left_gate").GetString();
-			return await Post(url, "ON");
-		}
-
-		private bool VerifyUser(long id, string username)
-		{
-			Console.WriteLine("Verify user " + username + " id " + id);
-			foreach (var element in config.RootElement.GetProperty("valid_users").EnumerateArray())
-			{
-				if (username == element.GetString())
-				{
-					return true;
-				}
-			}
-			foreach (var element in config.RootElement.GetProperty("valid_user_ids").EnumerateArray())
-			{
-				if (id.ToString() == element.GetString())
-				{
-					return true;
-				}
-			}
-			return false;
-		}
 	}
 }

IUserState.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading.Tasks;
+using Telegram.Bot.Args;
+
+namespace ZaoBot
+{
+	interface IUserState
+	{
+		Task<IUserState> ProcessMessage(IUserState previous, MessageEventArgs e);
+	}
+}

MainMenuUserState.cs

@@ -0,0 +1,161 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Telegram.Bot;
+using Telegram.Bot.Args;
+using Telegram.Bot.Types.ReplyMarkups;
+using ZaoBot.OpenHab;
+
+namespace ZaoBot
+{
+	class MainMenuUserState : IUserState
+	{
+		const string CMD_WEATHER = "Погода";
+		const string CMD_STATUS = "Статус";
+		const string CMD_LEFT_GATE = "Открой левые ворота";
+		const string CMD_RIGHT_GATE = "Открой правые ворота";
+
+		ITelegramBotClient botClient;
+		private JsonDocument config;
+		HttpClient http = new HttpClient();
+		OpenHabClient openhab;
+
+		public MainMenuUserState(ITelegramBotClient botClient, JsonDocument config, OpenHabClient openhab)
+		{
+			this.botClient = botClient;
+			this.config = config;
+			this.openhab = openhab;
+		}
+
+		public async Task<IUserState> ProcessMessage(IUserState previous, MessageEventArgs e)
+		{
+			var response = "";
+			if (e != null)
+			{
+				if (!VerifyUser(e.Message.Chat.Id, e.Message.Chat.Username))
+				{
+					Console.WriteLine($"Received message {e.Message.Text} from invalid user {e.Message.Chat.Username}");
+					await botClient.SendTextMessageAsync(
+						chatId: e.Message.Chat,
+						text: "Ваш ID " + e.Message.Chat.Id + " сообщите его администратору"
+					);
+					return this;
+				}
+				Console.WriteLine($"Received a text message in chat {e.Message.Chat.Id}.");
+
+				if (e.Message.Text == CMD_LEFT_GATE)
+				{
+					response = await OpenLeftGate();
+				}
+				else if (e.Message.Text == CMD_RIGHT_GATE)
+				{
+					response = await OpenRightGate();
+				}
+				else if (e.Message.Text == CMD_WEATHER)
+				{
+					response = await ShowWeather();
+				}
+				else if (e.Message.Text == CMD_STATUS)
+				{
+					var newState = new StatusMenuUserState(botClient, config, openhab);
+					await newState.ProcessMessage(this, e);
+					return newState;
+				}
+				else if (e.Message.Text == "")
+				{
+					response = "Превед!";
+				}
+				else if (previous != this) response = "Главное меню";
+				else response = "Я не понял :-(";
+
+				if (e.Message.Text != "") response += "\nЧто дальше?";
+				else response = "\nЧего изволите?";
+			}
+
+			var replyKeyboardMarkup = new ReplyKeyboardMarkup(
+				new KeyboardButton[][]
+				{
+						new KeyboardButton[] { CMD_WEATHER },
+						new KeyboardButton[] { CMD_LEFT_GATE, CMD_RIGHT_GATE },
+						new KeyboardButton[] { CMD_STATUS },
+				},
+				resizeKeyboard: true
+			);
+
+			await botClient.SendTextMessageAsync(
+			  chatId: e.Message.Chat,
+			  text: response,
+			  replyMarkup: replyKeyboardMarkup
+			);
+			return this;
+		}
+
+		private async Task<string> ShowWeather()
+		{
+			try
+			{
+				string response = "";
+				foreach (var element in config.RootElement.GetProperty("items_weather").EnumerateObject())
+				{
+					var result = await openhab.GetItemState(element.Name);
+					response += element.Value + ": " + ParseState(result) + "\n";
+				}
+				return response;
+			}
+			catch (Exception e)
+			{
+				return "Fail: " + e.Message;
+			}
+		}
+
+		private string ParseState(ItemState state)
+		{
+			float value;
+			if (!float.TryParse(state.state, out value))
+			{
+				return "null";
+			}
+			try
+			{
+				return printf.Printf.sprintf(state.pattern, value);
+			}
+			catch (KeyNotFoundException)
+			{
+				return value.ToString();
+			}
+		}
+
+		private async Task<string> OpenRightGate()
+		{
+			return await openhab.PostItemState(config.RootElement.GetProperty("item_right_gate").GetString(), "ON");
+		}
+
+		private async Task<string> OpenLeftGate()
+		{
+			return await openhab.PostItemState(config.RootElement.GetProperty("item_left_gate").GetString(), "ON");
+		}
+
+		private bool VerifyUser(long id, string username)
+		{
+			Console.WriteLine("Verify user " + username + " id " + id);
+			foreach (var element in config.RootElement.GetProperty("valid_users").EnumerateArray())
+			{
+				if (username == element.GetString())
+				{
+					return true;
+				}
+			}
+			foreach (var element in config.RootElement.GetProperty("valid_user_ids").EnumerateArray())
+			{
+				if (id.ToString() == element.GetString())
+				{
+					return true;
+				}
+			}
+			return false;
+		}
+	}
+}

OpenHab/Item.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace ZaoBot.OpenHab
+{
+	class Item
+	{
+		public string name;
+		public string type;
+		public string label;
+	}
+}

OpenHab/ItemState.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace ZaoBot.OpenHab
+{
+	class ItemState
+	{
+		public string state;
+		public string pattern;
+	}
+}

OpenHab/OpenHabClient.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+
+namespace ZaoBot.OpenHab
+{
+	class OpenHabClient
+	{
+		private string url;
+		HttpClient http = new HttpClient();
+
+		public OpenHabClient(string url)
+		{
+			this.url = url;
+		}
+
+		public async Task<ItemState> GetItemState(string item)
+		{
+			var result = await http.GetAsync(url + "/rest/items/" + item);
+			var content = await result.Content.ReadAsStringAsync();
+			return ParseState(content);
+		}
+
+		private ItemState ParseState(string content)
+		{
+			var doc = JsonDocument.Parse(content);
+
+			var pattern = "";
+			JsonElement stateDescription;
+			if (doc.RootElement.TryGetProperty("stateDescription", out stateDescription))
+			{
+				pattern = stateDescription.GetProperty("pattern").GetString();
+			}
+			var result = new ItemState()
+			{
+				state = doc.RootElement.GetProperty("state").GetString(),
+				pattern = pattern,
+			};
+			return result;
+		}
+
+		public async Task<string> PostItemState(string item, string state)
+		{
+			return await Post(url + "/rest/items/" + item, state);
+		}
+
+		private async Task<string> Post(string url, string v)
+		{
+			var content = new ByteArrayContent(Encoding.UTF8.GetBytes(v));
+			content.Headers.Add("Content-Type", "text/plain");
+			var result = await http.PostAsync(url, content);
+			if (result.IsSuccessStatusCode) return "OK";
+			else return "Fail. " + result.ReasonPhrase;
+		}
+
+		public async Task<List<Item>> GetItems()
+		{
+			var result = await http.GetAsync(url + "/rest/items/?fields=name,type,label");
+			var content = await result.Content.ReadAsStringAsync();
+			var doc = JsonDocument.Parse(content);
+			var items = new List<Item>();
+			foreach (var element in doc.RootElement.EnumerateArray())
+			{
+				var label = "";
+				JsonElement l;
+				if (element.TryGetProperty("label", out l))
+				{
+					label = l.GetString();
+				}
+				items.Add(new Item()
+				{
+					name = element.GetProperty("name").GetString(),
+					type = element.GetProperty("type").GetString(),
+					label = label,
+				});
+			}
+			return items;
+		}
+	}
+}

StatusMenuUserState.cs

@@ -0,0 +1,74 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Telegram.Bot;
+using Telegram.Bot.Args;
+using Telegram.Bot.Types.ReplyMarkups;
+using ZaoBot.OpenHab;
+
+namespace ZaoBot
+{
+	class StatusMenuUserState : IUserState
+	{
+		public const string CMD_BACK = "Назад";
+
+		ITelegramBotClient botClient;
+		private JsonDocument config;
+		HttpClient http = new HttpClient();
+		OpenHabClient openhab;
+
+		public StatusMenuUserState(ITelegramBotClient botClient, JsonDocument config, OpenHabClient openhab)
+		{
+			this.botClient = botClient;
+			this.config = config;
+			this.openhab = openhab;
+		}
+
+		public async Task<IUserState> ProcessMessage(IUserState previous, MessageEventArgs e)
+		{
+			var response = "";
+			if (previous != this)
+			{
+				response = "Возможные проблемы:\n";
+				var items = await openhab.GetItems();
+				foreach (var item in items)
+				{
+					if (!item.name.StartsWith("Problem_")) continue;
+					response += item.label + ": ";
+					var state = await openhab.GetItemState(item.name);
+					if (state.state == "OFF") response += "OK";
+					else if (state.state == "ON") response += "PROBLEM!";
+					else response += "UNKNOWN";
+					response += "\n";
+				}
+			}
+			else if (e.Message.Text == CMD_BACK)
+			{
+				var newState = new MainMenuUserState(botClient, config, openhab);
+				await newState.ProcessMessage(this, e);
+				return newState;
+			}
+			else
+			{
+				response = "Я не понял";
+			}
+			var replyKeyboardMarkup = new ReplyKeyboardMarkup(
+				new KeyboardButton[][]
+				{
+						new KeyboardButton[] { CMD_BACK },
+				},
+				resizeKeyboard: true
+			);
+
+			await botClient.SendTextMessageAsync(
+			  chatId: e.Message.Chat,
+			  text: response,
+			  replyMarkup: replyKeyboardMarkup
+			);
+			return this;
+		}
+	}
+}